Although the original sender and recipient fields were added, the original SCL stamped on the quarantined message wasn’t visible. The OriginalScl property was exposed in Exchange 2007 SP1, and is now included in the updated form in that post. Installing the updated form exposes the original SCL for messages in the quarantine mailbox, as seen in Figure 1.

Figure 1: The original SCL for messages in the quarantine mailbox can be displayed using the updated Outlook form